Of these mixtures, which one is a solution? (S8P1a)

• A
• B
• C
• D

Tags

NGSS.MS-PS1-2

What is a homogeneous mixture? (S8P1a)

• a mixture that is the same throughout.
• a mixture that is made up of one type of atom.
• a mixture that is made up of one type of compound
• a mixture that cannot be separated through physical changes

Define a liquid. (S8P1b)

• Indefinite shape, indefinite volume
• Definite shape, definite volume
• Found in stars
• Definite volume, indefinite shape

Tags

NGSS.MS-PS1-4

Which of the following statements is NOT true of all different types of matter? (S8P1b)

• They are made of atoms and molecules
• The particles are always in motion
• The particles always move at the same speed
• They are made of particles that are too small to see

Tags

NGSS.MS-PS1-4

NGSS.MS-PS2-2

NGSS.MS-PS3-1

What is happening at "D" on the graph? (S8P1c)

• Water is boiling
• water is evaporating
• water is melting
• the sublimation of water

Tags

NGSS.MS-PS1-4

As you move down the first group, reactivity _________.  (S8P1c)

• Increases
• Decreases
• Stays the same
• They are all inert

Is milk going sour a physical or chemical change? (S8P1d)

• Physical 
• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

what happens when water freezes?(S8P1d)

• ice is formed; chemical property
• cold water is formed; physical change
• ice is formed; physical change
• cold water is formed; chemical change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the number of protons that the element in this image contain? (S8P1e)

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

the central region of an atom where its neutrons and protons are is its  (S8P1e)

• nucleus 
• electron cloud
• core 
• center